Updated October 2026
Data from Amazon and official Sonoff site.
2026 verdict
Energy metering is the whole difference, and it makes the Sonoff MINI ONE PM Matter Over WiFi Smart Switch the better smart relay of this pair.
It adds bidirectional power measurement with a year of energy history stored on the device, where the plain Sonoff MINI ONE Matter Over WiFi Smart Switch switches only. Both are otherwise the same module: a 16A single-channel concealed relay rated 3840W resistive, needing a neutral wire, speaking Matter over 2.4 GHz Wi-Fi and reaching Alexa, Google Home, Apple Home, SmartThings and Home Assistant with local HTTP, WebSocket and MQTT control. Pick the metering PM for a circuit you want to measure, a balcony solar feed above all, and the plain model when you only need switching.
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| Feature | Sonoff MINI ONE Matter Over WiFi Smart Switch | Sonoff MINI ONE PM Matter Over WiFi Smart Switch | Winner |
|---|---|---|---|
| Price | $17.90 | $19.90 | Sonoff MINI ONE Matter Over WiFi Smart Switch |
| Energy Monitoring | NO | YES | Sonoff MINI ONE PM Matter Over WiFi Smart Switch |
| Warranty | 2 years | 2 years | Tie |
| Safety | Overheating protection | Overheating protection, Overvoltage protection, Overcurrent protection, Overpower protection | Tie |
| Connectivity | 2.4 GHz WiFi | 2.4 GHz WiFi, Bluetooth | Tie |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Tie |
| Relay Channels | 1 | 1 | Tie |
| Power Off Memory | YES | YES | Tie |
| Dry Contact Mode | NO | NO | Tie |
| Wet Contact Mode | YES | YES | Tie |
| Zigbee Router | NO | NO | Tie |
What the differences mean
Energy monitoring
The Sonoff MINI ONE PM measures power in both directions and keeps a year of that history on the device, so it can sit on a balcony solar or other PV circuit and report generation as well as consumption. The plain Sonoff MINI ONE does no metering at all.
Protection
Sonoff documents overvoltage, overcurrent and overpower cutoff on the PM, alongside overheat. The plain model's page lists overheat protection, and the two modules share the same 16A resistive rating and the same installation rule of a 16A MCB or RCBO upstream.
Firmware
Sonoff publishes OTA firmware updates for the PM, including over MQTT from Home Assistant. The plain Sonoff MINI ONE's update path is not documented the same way.
Price
The plain Sonoff MINI ONE Matter Over WiFi Smart Switch is the more affordable of the two, since the metering hardware is what the PM's small premium buys.
What both share
Both are single-channel 16A relays that need a neutral wire, switch the live wire only, have no dry contact, mount inside an electrical box rather than a DIN rail, and use 2.4 GHz Wi-Fi with no Zigbee, Thread, Z-Wave or RF.
Which one to buy if
- you want to meter a circuit, such as a balcony solar feed
Only the Sonoff MINI ONE PM Matter Over WiFi Smart Switch measures power in both directions and keeps a year of history on the device.
- you only need to switch a light or appliance
The plain Sonoff MINI ONE Matter Over WiFi Smart Switch does the same switching for less, with no metering you would not use.
- you want documented overcurrent and overvoltage protection
Sonoff lists overvoltage, overcurrent and overpower cutoff on the PM in addition to overheat protection.
- you want a budget module for a Matter home
The plain model is the cheaper way into the same Matter over Wi-Fi platform and the same local APIs.
- you want firmware updates without pulling the module
Sonoff documents OTA updates for the PM, including over MQTT from Home Assistant.
$17.90
- + Price: $17.90
- - Energy Monitoring: NO vs YES
Winner
$19.90
- + Energy Monitoring: YES
- - Price: $19.90 vs $17.90
Upgrading from the Sonoff MINI ONE Matter Over WiFi Smart Switch?
Moving from the Sonoff MINI ONE Matter Over WiFi Smart Switch to the Sonoff MINI ONE PM Matter Over WiFi Smart Switch buys one thing: measurement. The PM adds bidirectional energy metering with a year of on-device history and a documented set of overvoltage, overcurrent and overpower protections on top of the same 16A single-channel switching, the same Matter over 2.4 GHz Wi-Fi, the same neutral requirement and the same local HTTP, WebSocket and MQTT control. If you only turn a light on and off, the plain model is all you need and costs less. If the circuit is one you want to watch, a home office feed or a balcony solar string in particular, the metering is worth the small step up.
Price history compared
Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.
- Sonoff MINI ONE Matter Over WiFi Smart Switch
- Sonoff MINI ONE PM Matter Over WiFi Smart Switch
Loading price history...
Frequently Asked Questions
Which is better overall, the Sonoff MINI ONE Matter Over WiFi Smart Switch or the Sonoff MINI ONE PM Matter Over WiFi Smart Switch?
The Sonoff MINI ONE PM Matter Over WiFi Smart Switch is the better smart relay when you want to measure a circuit, because it adds bidirectional energy metering and a year of on-device history. The plain Sonoff MINI ONE Matter Over WiFi Smart Switch is the better buy when you only need to switch a load, since it does the same job for less.
What is the biggest difference between the Sonoff MINI ONE Matter Over WiFi Smart Switch and the Sonoff MINI ONE PM Matter Over WiFi Smart Switch?
Energy monitoring. The Sonoff MINI ONE PM Matter Over WiFi Smart Switch measures power in both directions and stores a year of history, and it documents overvoltage, overcurrent and overpower cutoffs. The plain Sonoff MINI ONE Matter Over WiFi Smart Switch switches only, with no metering.
Which Sonoff relay do I need for balcony solar monitoring?
The Sonoff MINI ONE PM Matter Over WiFi Smart Switch, because its bidirectional metering reads generation as well as consumption, and its local history survives an internet outage. The plain Sonoff MINI ONE Matter Over WiFi Smart Switch cannot measure either direction.
Do both Sonoff relays need a neutral wire?
Yes. Sonoff states that both the Sonoff MINI ONE Matter Over WiFi Smart Switch and the Sonoff MINI ONE PM Matter Over WiFi Smart Switch require a neutral wire, and both carry dedicated N, L, L Out and S1 terminals. A switch box wired with only a live loop will not work for either.
Do both work with Home Assistant and Matter?
Yes. Both are Matter over 2.4 GHz Wi-Fi accessories, so they join Alexa, Google Home, Apple Home, SmartThings and Home Assistant without a hub, and both also expose local HTTP, WebSocket and MQTT interfaces for Home Assistant and other platforms. Neither has Zigbee, Thread, Z-Wave or RF.
Can either the Sonoff MINI ONE or the Sonoff MINI ONE PM switch a dry contact?
No. On both relays the two L Out terminals carry a switched live wire and are internally connected, so the contact is not potential-free. A boiler, gate controller or other low-voltage circuit needs a dry-contact module instead.
Full comparison table
Compare all 50 Relays side by side
You are looking at two of them. The full table lines up all Relays in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 50 Relays
- 53 specs compared
- 50 filters
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Unavailable
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